I used to use the TomTom website to setup locations and destinations, and then automatically download them into TomTom on my phone.

 

In theory Skoda Connect fulfills the same function for my new Karoq, but I'm not sure the downloading works, and it does not seem to have any concept of saved destinations. Ideally I would like to import my locations from TomTom but can't find any way to do that. Am I missing something?

I suspect that the TomTom files are a different format from that needed by the car, apart from any way to get them from the phone into the car's system.  But you can use TomTom via Android Auto (and I expect Apple Car Play) through the infotainment screen.  

 

You can also set favourites etc directly into the car's own navigation system.  

 

I'm a long-time TomTom user and still miss it after a year using the car's system.  I've tried using TomTom through AA and it's a bit clunky, apart from having to have my phone plugged in - mine doesn't have wireless connection except Bluetooth and that can't be used for the TomTom app.   If I had't sold my TomTom on Fleabay I'd seriously consider using it in the car instead of the one fitted. The only advantage the car system has is the bigger screen.